基于均布荷载面指标的简支梁桥损伤识别研究

摘要

As an important aspect of transportation infrastructure,bridge plays an important role in protecting the safe operation of transport systems.In this paper,the simply supported bridge is used as research obj ect.The uniform load surface and its curvature indicators are constructed based on frequency and modal shape data,which are applied to the identification of damage loca-tions and severity.The numerical simulation for bridge with uniform section is used to verify the effectiveness of the proposed method.%桥梁结构是重要的交通基础设施，在保障交通系统安全运营方面意义深远。本文以最为常用的简支梁桥为研究对象，基于模态频率和振型数据，构建均布荷载面及其曲率指标，对结构的损伤状态进行识别。对等截面简支梁的有限元数值模拟分析验证了该方法的有效性。